Jerusalem Talmud Megillah 4.2

משנה: וּבְרָאשֵׁי חֳדָשִׁים וּבְחוֹלוֹ שֶׁל מוֹעֵד קוֹרִין אַרְבָּעָה. אֵין פּוֹחֲתִין מֵהֶן וְאֵין מוֹסִיפִין עֲלֵיהֶן וְאֵין מַפְטִירִין בַּנָּבִיא. הַפּוֹתֵחַ וְהַחוֹתֵם בַּתּוֹרָה מְבָרֵךְ לְפָנֶיהָ וּלְאַחֲרֶיהָ.

MISHNAH: On New Moon’s Days and on the intermediate days of holidays four are reading, no less and no more, and one does not close with a reading from Prophets. The ones who start and finish the Torah reading recite the benediction before and after the reading. This is the principle: four are reading on any {day} when there is musaf and it is not a holiday.

הלכה: רַב חוּנָה אָמַר. שְׁלֹשָׁה קְרוּיוֹת שֶׁבַּתּוֹרָה לֹא יִפְחֲתוּ מֵעֲשָׂרָה פְסוּקִים. חִזְקִיָּה אָמַר. כְּנֶגֶד עֲשֶׂרֶת הַדִּיבְּרוֹת. [וְהָא תַנִּינָן. בַּיּוֹם הָרִאשׁוֹן בְּרֵאשִׁית וִיְהִי רָקִיעַ. וְהָא לֵית בְּהוֹן אֶלָּא תְמַנְיָיא. רִבִּי אִידִי אוֹמֵר. אִיתְפַּלְּגוֹן כַּהֲנָא וָאַסִּי. חַד אָמַר. חוֹזֵר. וְחוֹרָנָא אָמַר. חוֹתֵךְ. מָן דְּמַר. חוֹזֵר. חוֹזֵר שְׁנֵי פְסוּקִים. וּמָן דָּמַר. חוֹתֵךְ. וַיְהִי עֶרֶב וַיְהִי בֹקֶר פָּסוּק בִּפְנֵי עַצְמוֹ. וְהָא תַנִּינָן. בַּשֵּׁנִי יְהִי רָקִיעַ וְיִקָּווּ הַמַּיִם. מָאן דְּאָמַר. חוֹזֵר. חוֹזֵר שְׁנֵי פְסוּקִים. וּמָן דָּמַר. חוֹתֵךְ. אֶפִילוּ חוֹתֵךְ אֵין בּוֹ. הָתִיב רִבִּי פִלִּיפִּי בַּר פְּרוֹטָה קוֹמֵי רִבִּי יוֹנָה. הֲרֵי פָּרָשַׁת עֲמָלְק. אָמַר לֵיהּ. שַׁנְיָיא הִיא. שֶׁהִיא סִדּוּרָהּ שֶׁלְ יוֹם.] הָתִיב רִבִּי לָעְזָר בַּר מְרוֹם. וְהָא תַאנֵּי. הַמַּפְטִיר בַּנָּבִיא לֹא יִּפְחוֹתּ מֵעֶשְׂרִים וְאֶחָד פְּסוּקִים. וְיִהְיוּ עֶשְׂרִים וּשְׁלֹשָׁה. תְּלָתָא עֲשָׂרָה וּתְלָתָא עֲשָׂרָה וְחַד שְׁלֹשָׁה.

HALAKHAH: Rav Ḥuna said, three people reading in the Torah shall not do less than ten verses. Ḥizqiah said, corresponding to the Ten Commandments [But did we not state, “on Sunday, In the Beginning and there shall be a spread”? And these are only eight! Rebbi Idi said, Cahana and Assi disagreed. One said, he repeats. But the other said, he splits. He who says that he repeats, he repeats two verses. He who says he splits, he splits it was evening, it was morning, as a separate verse. But did we not state, “on Monday, there shall be a spread and the waters shall come together”? He who says that he repeats, he repeats two verses. He who says he splits, he could not split. Rebbi Philippos ben Protos objected before Rebbi Jonah, is there not the paragraph about Amalek? He said to him, there is a difference since this is the topic of the day.] Rebbi Eleazar from Merom asked, was it not stated, the one who reads the conclusion from Prophets should not do less than 21 verses. Should there not be 23? Three for ten, three for ten, and one three.